# Scaling DC Voltage [0V-6.5V] to [0V to 10V] [closed]

I have an input DC signal voltage 0V to 6.5V that need to be scale up to DC voltage 0V to 10V. Any advise what type of circuit that I should use?.

• How about an opamp with approx. 1.5 times amplification? The setup depends on your signal source and what it is connected to. Commented Oct 5, 2015 at 8:13
• Is this a signal or are you trying to provide 10V power from 6.5V? What power supplies do you have available? Commented Oct 5, 2015 at 11:14
• Hi Olin Lathrop this only a for signal application. Commented Oct 7, 2015 at 5:53

## 1 Answer

An amplifier, with a gain of 1.53 (10/6.5) you can make this using an op-amp IC and a few resistors.

There is a tutorial on using op-amps here.

The circuit you need would be:

simulate this circuit – Schematic created using CircuitLab

• This site likes to be standalone and independent as possible. Please consider adding a circuit diagram that shows an opamp design that does what the OP needs. Commented Oct 5, 2015 at 9:48
• How about using values that are actually available in the shop? When looking at E24 values 30 and 56 are closest (0.18%, which is much better than the tolerance of the components which is usually 1 or 2%). When looking at regular E12 resistors 12/22 or 18/33 are closest (both at 0.46% error for components with 5% tolerance). Commented Oct 5, 2015 at 15:29
• 5.3k can be made from 5.1k and 2 100R values in series.
– Icy
Commented Oct 5, 2015 at 21:23
• Yeah, but nobody does that in anything resembling production. Insertion cost, board space etc. Commented Oct 7, 2015 at 4:31
• Agreed but using preferred values would not have improved the clarity of the answer
– Icy
Commented Oct 7, 2015 at 5:21